It's hard to believe that 15 processes is not enough to run a store, unless you have a lot of optional tasks being launched. Anyway, I would talk with your host to see what's running, and if any processes are unnecessary. Perhaps something during server startup is failing to end no-longer-needed processes. If your code is dispatching processes (starting up tasks) for one reason or another, check if they continue to run when they're done (i.e., are failing to close down). Check that you aren't running, say, multiple databases when only one is needed.